I really want to like this, I really do, but it just falls flat. Those first messages are properly creepy, the entire concept is delightful, but trailing off into, as Rioghail says, "standard 'crazy repetition'" just makes it fall down. I mean, surely suddenly having the ability to communicate help keep her slightly more sane?
So maybe have a bit of a think about how being able to communicate has changed her. About how she's no longer in the monastery, but in a scientific facility. About how she came to be in the icon, and how she might want to tell her story - if she can.
Because I really do want to like this - hell, I want to love this. I love the idea. But I need to have it more than just "She's trapped in a painting and it's ka-razy!"